Arma 3: Error Messages

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See Arma 3 Known Issues.

Error types

Errors can be Normal, or DebugOnly. If it is DebugOnly, the error will only show when Arma 3 is in debug mode.

Errors can also occur with, or without context. This is additional information about where the error occurs to improve the experience of debugging. However, even if an error occurs, additional context for the error will only be shown if Arma 3 is in debug mode

Script errors

Error	Type	Context	Description	Example
Generic Error in Expression	Normal	Context	The type of an argument to a command is incorrect.	systemChat 10
			A command that can only be run in a scheduled environment was instead run in an unscheduled environment (sleep, spawn)	sleep 10
Zero Divisor	Normal	Context	A number was divided by 0	10/0
			An array index was accessed that doesn't exist	[1,2,3] select 20
Attempt to override final function	Normal	Context	A compileFinaled function was attempted to be overwritten	BIS_fnc_endMission = {systemChat "Trying to do bad things"}
getVariable called on null object	DebugOnly	Context	getVariable was called on a null namespace	objNull getVariable "varname"
getVariable called on null group				grpNull getVariable "varname"
Serialization of Control variables is not implemented	Normal		Control variables cannot be saved by the game when a mission is saved, as they are specific to the time it was loaded. This means that this error will occur if such an item is saved in missionNamespace or if any script using control variables didn't run the disableSerialization command first. To fix this you can store Control values in uiNamespace instead and make sure that any scripts handling these variables have disableSerialization set.	cant_put_that_here = allControls (allDisplays # 0)

Stringtable errors

Error	Type	Context	Description	Example
Unsupported language English in stringtable	Normal	Context	This happens if an entry was not found in the desired language e.g., English

Config errors

Error	Type	Context	Description	Example
Cannot delete class xxxx, it is referenced somewhere (used as a base class probably)	Normal		This happens if you try and delete a config entry that is inherited by another class. For more info see delete
Updating base class RscShortcutButton->RscButton...	Normal		Caused by inheriting from wrong config while modifiying an existing base class. Currently Arma 3 has a lot of these issues out of the box.